1 sentence for 来劲 (lái​jìn — high-spirited)

1. 他干起活来真来劲，一点都不觉得累。

   tā gàn qǐ huó lái zhēn lái​jìn, yī​diǎn dōu bù jué​de lèi.

   He works with such enthusiasm that he doesn't feel tired at all.

   Source: Dong Chinese Dictionary